Evidence map›Paper›PMID 9596719›Full record

ArticleInfection and immunity1998

Molecular characterization of Mycoplasma arthritidis variable surface protein MAA2.

L R Washburn, K E Weaver, E J Weaver, W Donelan, S Al-Sheboul

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.1field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Article
  3. Genome of Mycoplasma arthritidis.Infection and immunity · 2008
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

L R WashburnDepartment of Microbiology, University of South Dakota, Vermillion, South Dakota 57069, USA. lwashbur@sunbird.usd.edu
K E Weaver
E J Weaver
W Donelan
S Al-Sheboul
University of South Dakota · US

Funding

MYCOPLASMA ARTHRITIDIS-HOST CELL INTERACTIONR01AR042553 · NIAMS · UNIVERSITY OF SOUTH DAKOTA · PI WASHBURN, LEIGH R · 1993 to 1995
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NIAMS NIH HHS R01 AR42553
6 · The paper itself

Abstract

Earlier studies implied a role for Mycoplasma arthritidis surface protein MAA2 in cytadherence and virulence and showed that it exhibited both size and phase variability. Here we report the further analysis of MAA2 and the cloning and sequencing of the maa2 gene from two M. arthritidis strains, 158p10p9 and H606, expressing two size variants of MAA2. Triton X-114 partitioning and metabolic labeling with [3H]palmitic acid suggested lipid modification of MAA2. Surface exposure of the C terminus was indicated by cleavage of monoclonal antibody-specific epitopes from intact cells by carboxypeptidase Y. The maa2 genes from both strains were highly conserved, consisting largely of six (for 158p10p9) or five (for H606) nearly identical, 264-bp tandem direct repeats. The deduced amino acid sequence predicted a largely hydrophilic, highly basic protein with a 29-amino-acid lipoprotein signal peptide. The maa2 gene was expressed in Escherichia coli from the lacZ promoter of vector pGEM-T. The recombinant product was approximately 3 kDa larger than the native protein, suggesting that the signal peptide was not processed in E. coli. The maa2 gene and upstream DNA sequences were cloned from M. arthritidis clonal variants differing in MAA2 expression state. Expression state correlated with the length of a poly(T) tract just upstream of a putative -10 box. Full-sized recombinant MAA2 was expressed in E. coli from genes derived from both ON and OFF expression variants, indicating that control of expression did not include alterations within the coding region.

Indexed as

Bacterial ProteinsGenes, BacterialGenetic VariationAmino Acid SequenceBase SequenceEscherichia coliGenomic LibraryMembrane ProteinsMolecular Sequence DataMycoplasmaNucleic Acid HybridizationOligonucleotide ProbesPolymerase Chain ReactionRecombinant ProteinsRepetitive Sequences, Nucleic AcidSequence Analysis, DNABacterial ProteinsMAA2 protein, Mycoplasma arthritidisMembrane ProteinsOligonucleotide ProbesRecombinant Proteins

Identifiers

PMID9596719
PMCPMC108241
OpenAlexW2127565343

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.